Often misunderstood and misrepresented, trigger warnings can be vital for people who have experienced trauma. But is it actually possible to predict what will trigger someone when organising an arts event? Mental Health Foundation film lead Richard Warden, theatre director Jen McGregor and clinical psychologist Dr Simon Stuart share their experiences with cultural critic Hannah McGill, in a discussion recorded at arts and mental health symposium The Dust of Everyday Life, CCA, Glasgow, 20 April 2017.